Initial commit of 001code-html Scratch frontend project.

Includes scratch-gui, scratch-vm, scratch-blocks, scratch-render, scratch-l10n, and deployment config.

Co-authored-by: Cursor <cursoragent@cursor.com>

scratch-vm/test/unit/blocks_pen_tw.js

@@ -0,0 +1,32 @@
+const test = require('tap').test;
+
+const Runtime = require('../../src/engine/runtime');
+const Scratch3PenBlocks = require('../../src/extensions/scratch3_pen/index');
+
+test('_clampPenSize', t => {
+    const rt = new Runtime();
+    const pen = new Scratch3PenBlocks(rt);
+
+    t.equal(pen._clampPenSize(-1), 1);
+    t.equal(pen._clampPenSize(0), 1);
+    t.equal(pen._clampPenSize(0.25), 1);
+    t.equal(pen._clampPenSize(1), 1);
+    t.equal(pen._clampPenSize(10), 10);
+    t.equal(pen._clampPenSize(1000), 1000);
+    t.equal(pen._clampPenSize(1200), 1200);
+    t.equal(pen._clampPenSize(1201), 1200);
+
+    rt.setRuntimeOptions({
+        miscLimits: false
+    });
+    t.equal(pen._clampPenSize(-1), 0);
+    t.equal(pen._clampPenSize(0), 0);
+    t.equal(pen._clampPenSize(0.25), 0.25);
+    t.equal(pen._clampPenSize(1), 1);
+    t.equal(pen._clampPenSize(10), 10);
+    t.equal(pen._clampPenSize(1000), 1000);
+    t.equal(pen._clampPenSize(1200), 1200);
+    t.equal(pen._clampPenSize(1201), 1201);
+
+    t.end();
+});